Freemartinism in replacement ewe-lambs of the Ripollesa sheep breed.
J Vet Sci
; 19(6): 858-861, 2018 Nov 30.
Article
in En
| MEDLINE
| ID: mdl-30304885
ABSTRACT
The freemartinism syndrome affects almost all female calves born as co-twins to male calves, whereas little is known about this phenomenon in female sheep. Within this context, 1,185 ewe-lambs from the Ripollesa sheep breed were genotyped for the presence of oY1 polymorphism (a non-autosomal region of the Y chromosome). Neither ewe-lambs from single births (856) nor ewe-lambs from all-female multiple births (170) were revealed as freemartins, whereas five of 159 ewe-lambs from multiple births with male co-twins were freemartins (3.15 ± 1.38%). All freemartin ewe-lambs were confirmed by physical examination of external genitalia. The results confirm a low incidence of freemartinism from heterosexual twin pregnancies in Ripollesa sheep.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Sheep Diseases
/
Freemartinism
Limits:
Animals
/
Pregnancy
Language:
En
Journal:
J Vet Sci
Journal subject:
MEDICINA VETERINARIA
Year:
2018
Type:
Article
Affiliation country:
Spain